Rotor Position Estimation for Single- and Dual- Three-Phase Permanent Magnet Synchronous Machines Based on Third Harmonic Back-EMF under Imbalanced Situation

Chinese Journal of Electrical Engineering ›› 2017, Vol. 3 ›› Issue (1): 63-72.

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Rotor Position Estimation for Single- and Dual- Three-Phase Permanent Magnet Synchronous Machines Based on Third Harmonic Back-EMF under Imbalanced Situation

Jiaming Liu, Zi-Qiang Zhu^*

Department of Electronic and Electrical Engineering, University of Sheffield, S1 4DE, UK

Published:2019-11-01
Contact: E-mail: z.q.zhu@sheffield.ac.uk.
About author:Jiaming Liu received the B.Sc. and M.Sc. degrees from Electrical Engineering, from Tianjin University, Tianjin, China, in 2007 and Zhejiang University, Hangzhou, China, in 2010, respectively, and the Ph.D. degree from the University of Sheffield, Sheffield, UK, in 2013. In 2010, he was an Electrical Engineer with Delta Electronic (Shanghai) Co., Ltd. He is currently with the Siemens Wind Power Limited, Keele, UK. His research interest is control of permanent-magnet wind power generators. Zi-Qiang Zhu received the B. Eng. and M.Sc. degrees in electrical and electronic engineering from Zhejiang University, Hangzhou, China, in 1982 and 1984, respectively, and the Ph. D. degree in electrical and electronic engineering from The University of Sheffield, Sheffield, U.K., in 1991. Since 1988, he has been with the University of Sheffield, where he is currently a Professor with the Department of Electronic and Electrical Engineering and the Head of the Electrical Machines and Drives Research Group. His current major research interests include the design and control of permanent-magnet brushless machines and drives for applications ranging from automotive to renewable energy. He is a Fellow of Royal Academy of Engineering, U.K.

Abstract

Abstract: In this paper, an improved rotor position estimation strategy based on third harmonic back-EMF for single- and dual-three-phase permanent magnet synchronous machines (PMSMs) under imbalanced situation is proposed. Due to the imbalanced machine impedance, back-EMF or sensing resistor network, the measured triplen harmonic back-EMF will contain certain fundamental component distortion which may severely deteriorate the performance of rotor position estimation. With the aid of the fundamental component compensator, this distortion can be significantly compensated, and the rotor position estimation error can be minimized considerably. The proposed strategy has been implemented on a dSPACE platform with a prototype of dual-three-phase PMSM with serious imbalanced parameters, and operate at single- and dual-three-phase conditions. The experimental results prove that the proposed strategy can significantly improve the steady-state and dynamic performance of rotor position estimation under imbalanced situation.

Key words: Fundamental distortion compensation, imbalanced situation, sensorless, single- and dual-three-phase PMSMs, SRFF, third harmonic back-EMF

Jiaming Liu, Zi-Qiang Zhu. Rotor Position Estimation for Single- and Dual- Three-Phase Permanent Magnet Synchronous Machines Based on Third Harmonic Back-EMF under Imbalanced Situation[J]. Chinese Journal of Electrical Engineering, 2017, 3(1): 63-72.

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Rotor Position Estimation for Single- and Dual- Three-Phase Permanent Magnet Synchronous Machines Based on Third Harmonic Back-EMF under Imbalanced Situation

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